Also known as Jack, Mangy, Red Bream (QLD juvenile colloquialism). Bait, technique, tide windows, and where the bite is on right now.
Hero spots in our coverage where Mangrove Jack is in season for May. Click through for the live forecast.
Out of season across our covered spots in May. Check back in October.
Cast tight — and I mean tight — to mangrove roots, rock bars, fallen timber, jetty pylons. Then crank fast for 2-3 metres to get the jack to commit, then pause. Strikes are violent and immediate; lock the drag because they will bury you in structure inside 1.5 seconds. Heavy gear: 30–40 lb braid, 40–60 lb leader. The dawn surface bite in tropical estuaries (Hinchinbrook, Daintree) is the most thrilling jack fishing in the country.
Run-up tide into mangrove root systems is when jacks move up into shallower ambush positions. The last two hours of the run-up through to the top of the tide is the prime window. They'll feed on the run-out too, but the run-up is more reliable. Dawn and dusk over-ride tide — a dead tide at sunrise still produces.
Spring tides around new and full moon push jacks higher into structure and create stronger current at creek mouths — both help. The few days before the new moon are particularly productive in QLD estuaries. Night fishing during the dark of the moon with live baits produces some of the biggest fish.
QLD: 35 cm, bag of 5. NSW: 35 cm, bag of 5. NT: 35 cm, bag of 5. WA: 35 cm, bag of 4. Mangrove jacks are slow-growing — a 50 cm jack is 10+ years old. Verify at the relevant state fisheries authority.
From our training corpus of ~1.1M angler-logged catches across 14 regions. Last refreshed 2026-05-14.
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